Rotary pump, motor or the like



April 26, 1960 H. R. DEL Rico 2,934,043

ROTARY PUMP, MOTOR oR THE LIKE Filed Jan. 16, 1958 b lll/r11,

INVENTOR.

United States Patent O' ROTARY PUll/IP, MOTOR OR THE LIKE Herencia R.Del Rico, Beverly Hills, Calif.

Application January 16, 1958, Serial No. 709,380

6 Claims. (Cl. 121-60) My invention relates to rotary units, such asfluid driven power motors or pumps, and more particularly to rotaryapparatus applicable for uses with elastic uids and having means forproviding maximum torque fo'r the driven shaft for the unit with aminimum of elastic uid supplied thereto under pressure.

Accordingly, an object of my invention is to provide a rotary power unithaving a pair of cylinder banks, each bank consisting of a cylinderblock member and each of which being provided with a plurality ofsuitably positioned pistons, also having a suitably arranged olf centershaft for providing piston strokes so that the elastic fluid, such asair or other suitable medium, when supplied under pressure, will causesaid pistons to become actuated, thus causing said cylinder blockmembers to rotate and at the same time providing means for ro'tating theily wheel of said power unit and for maintaining such rotation inunison, during the operation of said apparatus.

Another object of my invention is to provide said power unit with asuitable air ow control means, adapted for supplying elastic uid intosaid pistons of the apparatus at a steady uid dow and constant quantity.

A further object of my invention is to provide said power unit withmeans for maintaining proper rotative relation between said pair ofcylinder blocks and said ily wheel, when said power unit is inoperation.

Another object of my invention is to provide said power unit withsuitable gear reduction means for increasing the torque and power of thedriven shaft when said apparatus is in use.

My invention also has for its objects to provide such means that arepositive in operation, convenient in use, easily installed in a workingposition and easily disconnected therefrom, economical in manufacture,relatively simple, and of general superiority and serviceability.

Other and further objects and advantages of my invention as willhereinafter more fully appear, I attain by the construction herein shownon the drawings and described in the specification, forming a part of myapplication.

Reference is had to the accompanying drawings, in which the similarreference characters denote the same parts. Y

In the drawings:

Fig. l shows the front elevational view of the power unit, taken on line1--1 of Fig. 2.

Fig. 2 shows a vertically sectional view of the power unit, taken in thedirection of lines 2 2 of Fig. 1.

Fig. 3 shows a partly fragmentary view of the main bearing of the powerunit, slightly enlarged, and taken from the top as disclosed in Fig. 2.

Fig. 4 shows a vertical sectional view of the uid ports and passages,taken on lines 4-4 of Fig. 3.

Fig. 5 shows a vertical sectional view of the power unit disclosing therelative positions of the rotation control rollers and control pins,taken in the direction of lines 5-5 of Fig. 2.

2,934,043 Patented Apr. 26, 1960 "ice Fig. 6 shows a fragmentarysectional view of the iluid inlet and exhaust ports and passages, takenon line 6-6 o'f Fig. 2.

Fig. 7 shows the rotation control bearings of the cylinder blo'cks inrelation to the fly wheel of the apparatus, showing same in modied form.

Fig. 8 shows a fragmentary sectional View, taken from the left of Fig.7.

Fig. 9 shows a fragmentary sectional view of the rotation controlbearing, showing same in modified form.

Fig. l0 shows a fragmentary sectional and partly elevational view of thepower unit, disclosing the position of the power gears in relation tothe ily wheel of the apparatus.

Describing my invention more in detail, in its broader aspects, saidinvention comprises a housing 2, which is provided with a frontwardlyextending shaft support member 4, also having a rearwardly extendinghousing or cover member 6 provided with a suitable hand grip member 8which is held in place and positio'n by means of suitable threadedconnection 10.

A power shaft 12 is provided in said frontwardly extending member 4,which is supported in its rotatable position by means of antifrictionbearing 14, the front end section of said extending member 4 beingprovided with an end seal while said power shaft end being provided witha suitable fastener, such as chuck or the like, not shown.

The internally extending end of said shaft 12 is connected to a ilywheel ilange 16 having a fly wheel rim section 1S attached thereto andhousing therein a pair of cylinder banks, as shown. It may be noted,that said ilange 16 and said ily wheel rim section 18, may, if sodesired, be made in one piece in order to facilitate its manufacture.

Said fly wheel rim 18 is provided with a transversely dividing sectionor web member 20 having a suitable bearing, wherein the main journal 22of the unit shaft 24 is mounted, and which is provided with a frontolf-centereud section 26 and a rear off-center section 28, said rearsection 28 being provided with a suitable shaft extension 30 which isheld in place by means of a suitable locking or fastening member 32, asshown.

Said hand grip member 8 is provided with a fluid inlet` passage 34, theupper end of which inter-connects the inlet passage 36, which isdisposed in said shaft extention 30 and leading into said cylinderbanks, the fluid passing frontwardly into the rst stage of the inletpassage 38, then passing into' the second stage fluid inlet passage 40.

Said inlet passages 3S and 40 in said unit shaft'24 leading into saidcylinder banks, consisting of said first and second stages, are eachprovided with a suitable fluid inlet and distributing passage section42, while the passages 44 and 46 are each provided with their respectivefluid outlet and distributing passage 48.

The rst and second stage of said power unit shaft 24 are each providedwith suitable cylinders S0, which are disposed radially in the first andsecond cylinder blocks 52 and 54, respectively.

lt may be noted, that each cylinder block 52 and 54, are each providedwith cylinder passages 56, each leading to their respective cylindersS0, also, the rst stage cylinder block 52 is maintained in position bymeans of a spacer 58, while the second stage cylinder block 54 isprovided with a mounting washer 60 and a lock Washer 62 which isdisposed in a suitable groove, as shown in Fig. 3, thereby holding therespective parts in place and position.

Each cylinder 50 is provided with a piston 64 which is of a conventionaldesign and each piston is connected to a suitable connecting rod 66,also, each outwardly extended end of said connecting rods beingconnected to a fly wheel rim 18 and held therein in place and in pivotalposition by means ofsuitable pivot pinmembers 70, as shown.

Obviously,` it may be noted that each of said separate rst and secondstagesrof the apparatus are working independently of each other, andyet, in their respective rotations,f each unit contributes the necessarymotive power to said ily wheel member. The elastic fluid passing throughpassages 38 of the first stage passes simultaneously into the passage 40of the second stage. Since the first stage of the apparatus is in adiametrically opposite position in relation to the second stage, therespective distributing sections 42V of said first and the second stagesareV positioned on the fluid inlet side and the outlet distributingsections 48 of the respective stages are positioned at the oppositeVside thereof, thus allowing the fluidV to flow into and through theinlet side passages 38 and 40 then passing into said cylinders andemerging at the opposite Yside at said distributing sections 48, andthen flowing into land through the discharge passage 72 which isdisposed at said rearwardly lextending shaft member 36 of saidapparatus. Y

A volume of air under pressure passing through the uid inlet passage 34is controlled by means of suitable control valve member 74 havingsuitable plunger member 76 disposed ktransversally of said air passage34, as shown in Fig. 2. Y

Normally said control valve 74 is in closed position, the plunger 76extending frontwardly and is supported in its frontward position bymeans of suitable spring member 78, having a nut 80 for holding thevalve assembly in position, while the outwardly plunger end is providedwithsuitable button 82, so that the operation of said air ow controlvalve may be facilitated.

The elastic fluid, in whatever form, is directed into the apparatus byconnecting the air fluid inlet hose, (not shown) to the hose connector68.

The fluid flow is directed through the inlet passage 34 when saidcontrol VValve 74 is depressed, allowing said fluid to pass into saidinlet passage 36 and 38, then owing through the 'cylinder passage 56entering said cylinders 50 of the lirst stage cylinder block 52, andsimultaneously owing into the inlet passage 40 and the cylinder passage56, passing into cylinders 50 of the second stage iirstand second stages52 and 54 into said distributing outlet passages 48, then flowing intoand through common discharge passage 72 of said shaft extension Si?.

In order to'maintain relative rotative positions between said y wheelrirn 18 and said cylinder blocks 52 and 54 of said first and secondstages of the apparatus,l when in operation, said webV member 20 isprovided with suitable roller members 84, which are disposed at eachface thereof and adjacent to the face of each respective cylinder block,while each cylinder block is provided with suitable companion rollers'86and maintaining surface contact, so that when said cylinder blocks 52and 54 are in rotation, said companion rollers 86 will follow aplanetary movement and around said roller members 84, thereby causingsaid cylinder blocks and said fly Wheel rim together with said y wheelange'16 to rotate in uni-V son, being'supported in their rotation bymeans of said connecting rods 66 and actuated by said pistons 64 duringleir reciprocal movement in their respective cylinders As shown in Figs7 and 8, the apparatus in modified form comprise a dividing wall or websection 20 which is provided with a set of antifriction'bearings 88adapted for maintaining the relative rotation of said cylinder blocksand said ily wheel.

The number of said bearings thatare required for providing a properfunction of the apparatus, are in direct relation to the number ofpistons employed. in each of said cylinder blocks 52 and 54.

Fig. 9 discloses a removable dividing wall section 90 which is mountedinteriorlyof said fly wheel rim section 18, said dividing wall beingsecured in its position in a conventional manner. A suitable crankbearing 92 is mounted in said dividing wall 90 having a crank pin 94disposed at one side for engaging a bushing disposed in the cylinderblock of the first stage and also having a crank pin 96 at the oppositeside of said bearing 92 adapted' for engaging a bushing disposed in thecylinder block of the second stage of the apparatus.

Said crank pins 94 and 96 are disposedtdi'ametrically opposite to eachother and each pin Yextending outwardly from said crank bearing 92, asshown.

Fig. l0 discloses a power unit 100 which comprises the componentpartsras disclosed in Figs. 1 to 3, having the forntwardly extending ilywheel shaft 12 connected by means of a set of gears 102 to a suitablepower shaft 104, which 'is mounted lin a Vconventional manner and havinga driver shaft`106 supported in place by means of said bearing 66 which.is disposed in a housing front extension 108.

Y Obviously it may be noted that the apparatus using the elastic duid inthe manner herein described, may be used as apower unit or as a pump, orif so desired, said apparatus may be used for securing a vacuum orpressure supplying unit, and as a heavy duty power unit which may beused in industry.

Therefore, while I have thus described my invention with greatparticularity, it will be clear that the same may be modified throughouta wide range.

I accordingly do not propose tobe limited tothe exact details ofconstruction herein shown onthe drawings and described in thespecification, but reserve the rights in practice to make the necessarychanges and modifications therein, which may come Within the scope ofthe appended claims.

' I claim is my invention:

1. In the apparatus of the class described the combination of, a twostageunit rotatably mounted upon a common unit shaft, each stageseparated by a web section disposed in a y wheel rim Ahaving a flangesection and connecting a power shaft, a set of roller members mounted insaid web section of said fly wheel rim and extending toward the adjacentface of each cylinder block, and a set of companion rollers mounted uponthe face of each cylinder block and located in an adjacent position tosaid web section, said roller members and said Vcompanion rollers beingheld and maintained at their respective outer surface contact, Vtherebymaintaining a relative and synchronous rotative relation of said cylin=der blocks and said y wheel of the apparatus.

' 2. In the apparatus of the class described the combination of, a twostage unit mounted upon a common unit shaft, each stage separated by aweb section disposed in a y wheel rim having a flange section andconnecting a power shaft, a set of crank bearings provided in said websection and rotatablyrmounted therein, said cran'k l bearings havingcrank pin members disposed at each side nation of, a twoV stage unitrotatably mounted upon a common unit shaft, each stage separated by aweb section disposed in a y wheel ri'm'having a flange section and'connecting a power shaft, arset of antifriction bear- ,Y ingsmountedfin sai'drwebv section, a crank bearing rop tatally mounted ineach of said antifriction bearings havingY af'crank pin at eachsidethereof and outwardly extending thereffrom, each` crank'pin being inone-'half offcenter position in relation to the'full o-center positionof said unit shaft section, a set of bearings in each of said cylinderblocks disposed at the adjacent face to said web section adapted formounting the respective crank pins of said crank bearings, formaintaining a rotative relation of said cylinder blocks and said ywheel.

4. ln the apparatus of the class described, the combination of a twostage unit having a y wheel and rotatably mounted within a housing andupon a common unit shaft, each separate stage comprising a cylinderblock and each cylinder block being separated by a web section disposedin a y wheel rim, said fly wheel rim having a ange connecting a powershaft, a set of fluid passages in said unit shaft connecting eachcylinder block of said two stage unit for directing the uid tiow thereinand into each of said cylinder blocks and for causing said two stageunit together with said ily wheel rim to rotate in unison, a set ofroller members mounted in said web section of said y wheel rim andextending toward the adjacent face of each cylinder block, and a set ofcompanion rollers mounted upon the `face of each cylinder block andlocated in an adjacent position to said web section, said roller membersand said companion rollers being held and maintained at their respectiveouter surface contact, thereby maintaining a relative relation of saidcylinder blocks and said fly wheel of said apparatus.

5. In the apparatus of the class described, the combination of a twostage unit having a y Wheel rotatably mounted within a housing, saidstage units being mounted upon a common unit shaft, each separate stagecomprising a cylinder block and each cylinder block being separated by aweb section disposed in a y wheel rim, said y wheel rim having a angeconnecting a power shaft, a set of fluid passage means in said unitshaft connecting each cylinder block of said two stage unit fordirecting the fluid flow therein and into each of said cylinder blocksand for causing said two stage unit together with said y wheel rim torotate in unison, a set of crank bearings provided in said web sectionand rotatably mounted therein, said crank bearings having crank pinmembers disposed at each side thereof and extending outwardly therefrom,a set of bearing bushings in each of said cylinder blocks disposed attheir adjacent faces in relation to said web section and adapted forreceiving therein said extending crank pin members, and therebymaintaining a rotative relation of said cylinder blocks of said twostage unit and said `ily wheel of said apparatus.

6. In the apparatus of the class described, the combination of a twostage unit provided with a `fly wheel and rotatably mounted within ahousing, a cover in said housing having a common shaft unit for mountingsaid two stage unit thereon, each separate stage comprising a cylinderblock and each cylinder block being held in separate position by a websection disposed in a y wheel rim, a flange in said fly wheel rimconnecting a power shaft and rotatably mounted at the front end 0f saidhousing, a set of uid passages in said unit shaft connecting eachcylinder block of said two stage unit for directing the fluid ow thereinand into each of said cylinder blocks and for causing said two stageunit together with said y wheel rim to rotate in unison, a set ofantifricti'on bearings mounted in said web section, a crank bearingrotatably mounted in each of said antifriction bearing having a crankpin at each side thereof and outwardly extending therefrom, each crankpin being in one-half oli-center position in relation to the fullolcenter position of said unit shaft section, a set of bearings in eachof said cylinder blocks disposed at the adjacent face of said websection adapted for mounting the respective crank pins of said crankbearings, for maintaining a relative relation of said cylinder blocksand said fly wheel during rotation of said two stage unit of saidapparatus.

References Cited in the le of this patent UNITED STATES PATENTS 304,553Parsons et al. Sept. 2, 1884 717,897 McCulloch Jan. 6, 1903 756,362Hazelrigg Apr. 5, 1904 1,890,041 McLeod Dec. 6, 1932 2,054,110 WorthSept. 15, 1936 2,585,574 Muller Feb. 12, 1952 2,814,277 Jimerson Nov.26, 1957 OTHER REFERENCES Rotor Portable Pneumatic Tools Catalog,copyright 1929, The Rotor Air Tool Co., page 12 relied on.

